The foundation solution was determined based on geotechnical conditions and structural requirements. Both Block A &B were proposed to be piled, this was due to an old basement on the site, which require removal, deepening the Made Ground and due to potential heave concerns in other areas of the site. SPEEDECK replaced the original piled scheme with a CFA Piled Raft as we could demonstrate this was the optimal foundation strategy for the site.
SPEEDECK were proactive in limiting the extent of heave precautions in areas of the site which didn’t require it, and where the old basement was to be dug out and removed. However, due to tree influence and desiccated shallow clay, heave protection was required for the western half of Block A.